Unique 7000 Flo- Diversion Valve (Reverse Acting)

Application

Alfa Laval’s ruggedly designed Reverse-Acting and standard upright Unique 7000 Flo-Diversion Valves are perfect for use with HTST (high temperature short time) systems within the dairy, beverage and food industries. It is ideal for applications where product integrity is imperative.

Working principle

The standard Unique 7000 Flo-Diversion Valve closes with the flow. The Reverse-Acting Unique 7000 Flo-Diversion valve closes against the flow.

The Unique 7000 Reverse-Acting Flo-Diversion valve’s patented design prevents hydraulic shock that can otherwise damage the valve stem, seat and other parts of the process system. All product wetted metal parts of both valves are constructed of 316L stainless steel. The “TR” (PTFE) of bonded stem plugs are FDA and 3A compliant material. Alfa Laval’s Flo-Diversion Valves have been designed to meet all requirements of PMO and 3A. The microswitch control housing meets NEMA 4 Specifications.

Standard Design

It is designed in compliance with current sanitary/regulatory standards. All wetted parts are type 316LSS, polished ID/OD. It comes standard with quick connect Tri-Clamp® ports for ease of assembly. The Unique 7000 Flo-Diversion valve system is available in 1½"-4" tube O.D. sizes. Low maintenance, permanently assembled actuators provide years of worry free service. The valve stem threads into the actuator stem, providing improved stem alignment so that no coupler is required. You have the choice of molded elastomer seat materials, or the popular, "TR2" replaceable seal/seat assembly.

A NEMA 4 microswitch control housing, mounted on the valve actuator, allows for installation of solenoids on the valve itself, not in the remote control panel. This eliminates the need for the quick air exhaust, required in previous Flo-Diversion valve designs. Or, you have the option of locating the solenoids on the control panel.

Performance and Dimensions

Unique 7000 Individual Flo Diversion Valves

Unique 7000 Reverse Acting Flo-Diversion Valve

Unique 7000 Reverse-Acting Flo-Diversion Valve

Principles of Operation

Valve Stem Operation

In most Divert valves, the seat closes with flow, which causes the flow to “self seat” the valve, which may create hydraulic shock. Hydraulic shock can damage the valve stem, valve seat, and other parts of your processing system, such as the connected piping heat exchangers, and pumps.

The Reverse-Acting Flo-Diversion valve is designed to close against product flow. When the valve is opened, pressure from product flow aids in pushing the valve stem to the Open position. The result is a stem that glides open and shut smoothly, eliminating the damaging effects of hydraulic shock. Alternately, when the valve is closed, the seat closes against the flow and allows product to be directed to its opposite open port, eliminating hydraulic shock.

Standard Valve Flow	Reverse-Acting Flow

Pressure drop/capacity diagrams

Note!

For the diagrams the following applies:

Medium: Water (68° F/20° C) Measurement: In accordance with VDI2173

Ordering

Please state the following when ordering:

• - Standard or reverse acting
• - Size
• - Elastomer - TR or TR2 seats

Can also be configured through CAS. fpr further information contact your local Alfa Laval company or visit www.alfalaval.com.

Materials

Note!

For further details, see instruction ESE00382-ENUS.